Extension telephone-signal.



P. J. WIRES.

EXTENSION TELEPHONE SIGNAL.

APPLICATION FILED .IULY19. I915.

m mwo Patented Apr. 10, 191

2 SHEETS-SHEET I.

15 17 J06? 56 2. 7 xii/2 w o I I WITNESSES;

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P. J. WIRES.

EXTENSION TELEPHONE SIGNAL.

APPLICATION FILED JULY 19, I915.

1.,QQ2,343 Patented Apr. 10, 1917,

2 SHEETSSHEET 2.

A TTORA/E V.

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PEARL 3'. WIRES, OF INDIANAPOLIS, INDIANA, ASSIGNOR OF ONE-HALF I0 AUGUST B. GOOLEY, OF INDIANAPOLIS, INDIANA.

EXTENSION TELEPHONE SIGNAL eaaaaa.

Specification of Letters Patent. Patented Apr. 191'? Application filed July 19, 1915. Serial No. 40,656. I

To all whom it may concern:

Be it known that I, PEARL J. WIRES, a citizen of the United States, residing at In-. dianapolis, in the county of Marion and State of Indiana, have invented a new and useful Extension Telephone-Signal, of which the following is a specification; reference being had to the accompanying drawings and to the letters and figuresof reference marked thereon.

This invention relates to the system of signaling that is commonly made use of by telephone companies for calling their customers or subscribers to their telephone instruments for a conversation, the invention having reference more particularly to an extension calling signal for attracting the attention of the party who should respond to the telephone calls in cases when,.owing to excessive noises about the telephone instrument, or because of the party being usually occupied .at'a distance from the telephone instrument, the ordinary signal bell of the instrumentcannot always be.

heard by such party. v r

An object of the invention is to provide an improved extension-signal 0r relay apparatus of the above-mentioned character that may be simply and inexpensively produced and be adapted to be connected with existing telephone systems and operate automatically in connection therewith.

Another object is to provide an extensionsignal for telephone users that shall be so.

constructed as to be adaptable for use under various conditions, and more particularly when the telephone instrument is located in or in proximity to a work-shop,a power house or elsewhere when no one is constantly near the telephone instrument and the subscriber or customer is fre uently absent from the instrument or occupied at a distance therefrom, and in manycases in a noisy place so as to be prevented from hearing the ordinary telephone signal bell.

A further object is to provide extensionsi'gnal or relay apparatus of such construction as to be capable of automatically controlling either flash lights, whistle signals,

or high power gong signals, more especially by the utilization of high-potential electric light currents almost invariably present in institutions making use of telephones.

With the above-mentioned and other objects in view, the invention consists in signaling means connected with a current-distributing lighting circuit provided with a circuit breaker, means controlled by means of a telephone circuit for controlling the circuit breaker to close the lighting circuit automatically when the telephone signal is in operation, and means for connecting a plurality of telephones with the extension signal apparatus. The invention consists also further in the novel structures, and in the parts and combinations and arrangements of parts, as hereinafter particularlydescribed and further defined in the accompanying claims.

Referring to the drawings,-Figure 1 is a diagrammatica]. illustration of the invention and various modifications thereof adapted to conform to various conditions of service, whether for illuminated, whistle or gong signaling devices; Fig. 2 is -a front plan of an improved terminal board as preferably constructed for connecting the signal apparatus with a lightin or power circuit, the front of the board being par tially broken away; Fig. 3 is a section of the terminal board on the line A A on Fig. 2;

operating a whistle form of signal device; 1

Fig. 9 is a diagrammatic view of a common form of bell ringer for direct current; and

Fig. 10 is a diagrammatic view of a common form of bell ringer for alternating current. a

Similar reference characters on the. various figures of the drawingsindicate correspending or similar elements or features of construction herein referred to in detail.

1 For the purpose of fully and clearly describing the invention, the manner ofpractically applying the same and the construction and function of various features thereof, a portionof a telephone system is illustrated, particularly a signal box 1 support ingcall bells or gongs 2 and also antelectlo. magnet structure 3 provided with a hammer 4, all of Which are or may be of wellknown construction, the electro-magnet winding being connected with. a ringing circuit 5 ofthe system, the ringing circuit for the purpose of the present invention preferably being provided with a circuit breaker 6. The ringing circuit includes an extension 7 that preferably is connected with a binding post 8 on the signal box for support and extends into the telephone instrument 9 (whether wall or desk type) which includes a lever 10 that controls a switch 11 and supports the receiver 12 when the instrument is not in use for talking purposes so as to close the ringing circuit, the switch automatically breaking the ringing circuit and closing the talking circuit 13 when the receiver is removed from the lever. The telephone instrument includes also a transmitter 14, as will be understood. The switch 11 is connected with a suitable ground wire 15.

The terminal board may be variously con structed in detail and also may be variously modified as may be desired or required. Preferably the terminal board comprises a back part 16 constituting a supporting base and a front part 17 suitably secured to the back part. One of the parts is suitably grooved to receive wiring arranged between the parts, the grooves preferably being in the front of the back part. The back or base part is provided with binding posts 18 and 19 .on one end portion and similar posts 20 and 21 on the opposite end portion. The lighting circuit wires 22 and 23 are connected to the binding posts 18 and 19 respectively and may conduct either direct current or alternating current. The front part 17 is provided with a suitable number of sockets to receive plugs whereby to electrically connect a ringing circuit with a lighting circuit, in the present caseprovision being made forponnecting two telephone systems with one lighting circuit, and also for connecting either a direct current telephone signal system or an alternating'current telephone system with the lighting circuit, as may be required. Therefore the front part 17 isprovided with a socket24 to which is connected a wire 25 that is connected to the binding post 18 and thereby with the circuit wire 22. The front part is provided also with asocket 26 to be connected with the lighting circuit, and also other sockets 27 and 28 which are connected with a circuit wire 29 that is connected with the socket 26. The two sockets 27 and 28 permit the conmotion of two telephones with the lighting circuit. In the present case the wire 29 is connected with the wire 25 by means of an electrical bridge 30 having two plugs 31 and 32 that are removably inserted in the sockets 24 and 26 respectively, the plugs being with drawn to break the circuit. The part 17 is provided also with two other sockets 33 and 34 to which a circuit wire 35 is connected, the wire being connected to the binding post 20 so as to form a continuance of the circuit 19 and 21. Two circuit wires 41 and 42 are connected to the binding posts 20 and 21 respectively for conducting a current to control the operation of the signaling device or devices that may be desired. The wires 36 and 37 may be automatically connected electrically by various devices and either electrically or mechanically. One form of appliancemay suitably comprise a base 43 on which a circuit breaker 44 is movably mounted so as to be brought into connection with a contact device 45 that is supported on the base and connected with the wire 36, the circuit breaker being connected with the wire 37 and normally held away from the device 45 by'means of a latch 46 mounted on the base and adapted to be retracted to release the circuit breaker, the latch being adapted to be drawn back-to an electro-magnet structure 47 mounted on the base, the winding of the electro-magnet being connected to a circuit wire 48 and also a'circuit wire 49, the wire 48 being connectedto the ringing wire 5 of the telephone system, the wire 49 being connected through the post 8 with the extension 7 of the ringing circuit wire. The circuit b'reaker44 preferably is of the gravity type comprising an arm having a projection 50 adapted to be engaged by a projection 51 with which the latch 46 is provided, the arm being supported on a pivot 52 sceured to the base 43, the arm being adapted to swing by the force of gravity, when mleased and so as to carry the projection 50 into contact with the device 45. It will be apparent that the wires 36 and 37 are. disconnected until the signal is transmitted over the ringing circuit 5, when the current energizes the electromagnet 47 and operates the latch 46 so as to cases the telephone user may not be where v the signal lights are located, but may at times be in a noisy place and where steam or compressed air may be available for blowing a whistle, in whichcase a casing 55 is provided and suitably supported and to which a supply pipe 56 is connected for conducting either steam v or compressed air to a whistle comprising a valve 57 and a bell 58, the valve being provided with an operating lever 59 to which a rod 60 is connected. The rod 60 is connected to a movable element or armature 61 of a suitable solenoid type of electro-magnet, the solenoid including a suitable magnet structure 62 into which the armature is to be drawn, the structure being suitably secured to the casing and supporting aspring' 63 that engages a nut- 64 connected to the rod 60 for closing the whistle valve when the magnet is not energized, the

'windingof the magnet having terminal wires 65 and 66 suitably connected to a socket 67 which is secured to the casing. A

suitable socket 68 is connected to branch wires 69 and-70 that are connected to the wires 41 and 42, respectively. A plug 71 is removably inserted in the socket 68 and is connected with a circuit wire cable 72 that is.connected to a in the socket 67.

In some cases the telephone subscriber or user, may have occasion to work in another position, or where a gong would be preferred instead of a whistle or a signal lamp, and in such case a suitable gong structure plug 73 which is inserted may comprise a base 74 on which a gong 7 5 is mounted to be struck by a hammer 76 operated by a suitable magnet usually inclosed in a casing 77, the winding of the magnet structure being connected, as willbe understood, with circuit wires 78 and 79 that are 'detachably connected by means of a switch 80 with the circuit wires 41 and 42 respectively, incandescent lamps 81 and 82 preferably being connected with the circuit wire 78. When it is not desired that the gong be sounded it may be disconnected from the circuit by means of the switch 80.

Also in case it is not desired that the whistle signal be sounded, either 'the plug 71 or the plug 73 may be withdrawn to break the circuit.

The construction and arrangement of devices and wiring above described are suitable for direct current, and obviously the signal gong structure should be suitable for the purpose; In order that alternating current may be utilized most satisfactorily the front part 17 of the terminal board is provided also with sockets 83, 84, 85, 86, the socket 83 being connected with the circuit wire 25, the other sockets being connected with a circuit wire 87. The front part is provided also with sockets 88 and 89 that are connected with a circuit wire 90 which is connected to the socket 33 and therefore with the wire 35. In order to connect the wire 87 with the wire 25 and also disconnect the Wire 29 from the wire 25, the plugs 31 and 32 should be removed from the sockets 24 and 26 and inserted in the sockets 83 and 84: respectively, so that, the. bridge 30 when not in use.

shall complete the circuit connection which, however, must be further completed automatically by means of circuit wires 91 and 92 provided with plugs 93 and 94: inserted in the sockets 86 and 89, respectively. Thewires 91 and 92 are normally disconnected so that the extension signal circuit is open In some cases an electromechanical circuit closer is preferred, or a different call bell apparatus with alternating current control, in which case a signal box 95 is provided which supports a suitable electro-magnet structure 96 and a hammer 97 to be operatedby the electro-magnet, and bells or gongs .98 mounted on the box, as will be understood. In such case the-Wire 91 is connected with a contact device 99 supported on the front of the box to be engaged by a gravity-drop form of circuit closer 100 that is supported on a pivot'lOl mounted also on the front of the box and connected with the wire 92, the circuit being closed automatically by the gravitydrop 100 when it falls into contact with the device 99. The electro-magnet winding is connected with a wire 102 that is connected with the ringing circuit wire 5, in the pres v ent case by means of a suitable circuit closer or breaker 103, which when properly adjusted completes the ringing circuit, in which case the circuit breaker 6 is adjusted to disconnect the direct current ringing apparatus from the circuit 5. The magnet winding is connected also with a wire 104 that is connected to the extension circuit wire 7 In some cases a ground wire 105 is connected with the ground wire 15. On the front of the signal box a latch 106 having a controlling arm 1-07 is mountedon a pivot 108, the latch being adapted to engage the upper end of the circuit connector 100 y rent, and that in .case alternating current be supplied then only the alternating current equipment will be necessary, and the terminal board may be modified accordingly. Also it should be understood that in some cases either one or two only of the signaling devices may be desired in the equipment. 7 i

In practical use, when the telephone operator causes-the telephone signal bell to,

be rung it is evident that the normally open what is claimed as new isextension signal circuit is automatically closed by either of the two types of circuit closers described, and that the signaling device connected with the signal circuit is purpose, in order that the apparatus may be in proper adjustment for further operation.

Having, thus described the invention,

1. An extension telephone-signal including a terminal board having two sockets, a

high-potential electrical circuit connected to one of the sockets, an extension-signal circuit connected to the other of the two sockets, a signaling-device to be actuated through the extension-signal circuit, and means for electrically connecting the two sockets together.

2. An extension telephone-signal including a terminal board having two sockets, a high-potential electrical circuit, a device for connecting the electrical circuit with one of the sockets, an extension-signal circuit connected to the other of the two sockets, a signaling-device to be controlled :through the extension-signal circuit, and means for connecting the two sockets electrically together.

3. An extension telephone-signal including a terminalboard having two sockets, a high-potential electrical circuit, a device for connecting the electrical circuit with one of the sockets, an extension-signal circuit connected with the other of the two sockets, a sound-producing device having controlling means adapted to be controlled through the extension-signal circuit, and means for elec- 1 trically connecting the two sockets together.

4:. An extension telephone-signal including a terminal board, two terminal sockets secured in the middle portion of the board, a terminal binding post secured to the board, a high-potential circuit wire connected with the two terminal sockets and the binding post, a plurality of terminalextension sockets secured to the board near one end thereof and electrically connected together, a plurality of terminal-extension sockets secured to said board near the opposite end thereof and electrically connected together, a bridge having two plugs for connecting one of either of the plurality of terminal-extension sockets with one of the two terminal sockets,

a plurality of extension-signal sockets spaced apart and secured to said board, an extension-circuit wire connected to said extensionsignal sockets, two branch wires having each a plug thereon, one plug to-be inserted into one of the extension-signal sockets, the remaining plug to be inserted into the remaining one. of either of the plurality of terminal-extension sockets} and means for electrically connecting the two branch wires together.

5. An extension telephone-signal including a whistle, a valve for the whistle having an operating-lever, a supported solenoid magnet, an armature movable in the magnet and connected with the operating-lever, an extension-signal circuit connected with the magnet, a high-potential lighting circuit, and means for electricallyconnecting the extension-signal circuit and the lighting circuit together.

6. An extension telephone-signal including a terminal board, a light-circuit wire having a terminal on the board, an extension-signal wire having a terminal on the board, a signal device connected with the extensionsignal wire, two separate electrical connecting devices mounted on the terminal board, means for electrically connecting the terminal of the light-circuit wire with either one of the connecting devices, and means for electrically connecting the terminal of the extensionsignalwire with either one of the connect in devices.

In a telephone signaling system, the combination with a series of signal-ringing appliances, and a high-potential electrical main1ng, a connector for connecting said one of the sockets with either one of the two groups of sockets, an extension-signal circuit wire connected with the sockets of the other of the two series, two plugs inserted respectively in one of the sockets of each of the two series and having each a branch circuit wire connected thereto, a movable circuit-closer for connecting the branch circuits wires together, and means for controlling the action of the circuit-closer constructed for and controlled automatically through the normal operation of the signal ringing appliances.-

In testimony whereof, I aflix in presence of two witnesses;

- i PEARL J. WIRES. Witnesses:

E. T. SILVIUS,

M. E. SPARROW.

signature 

